MCIMX255AJM4AR2 Freescale Semiconductor, MCIMX255AJM4AR2 Datasheet - Page 110

• Manufacturer Part Number: MCIMX255AJM4AR2
• Description: Processors - Application Specialized IMX25 1.2 AUTO
• Manufacturer: Freescale Semiconductor

Specifications of MCIMX255AJM4AR2

• Core: ARM926EJ-S
• Processor Series: MCIMX25
• Maximum Clock Frequency: 400 MHz
• Instruction / Data Cache Memory: 16 KB
• Data Ram Size: 128 KB
• Operating Supply Voltage: 1.15 V to 1.52 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: MAPBGA-400
• Interface Type: USB
• Memory Type: DDR2
• Minimum Operating Temperature: - 40 C

3.7.18
This section describes the electrical specifications, operation modes, and timing of the touchscreen ADC.
3.7.18.1
Table 85
110
Input sampling capacitance ( C
Resolution
Resistance value between ref and
agndref
Sampling rate (fs)
Internal ADC/TSC clock frequency
Multiplexed inputs
Data latency
Power-up time
clk falling edge to sampling delay
(tsd)
soc input setup time before clk rising
edge (tsocst)
soc input hold time after clk rising
edge (tsochld)
eoc delay after clk rise edge (teoc)
Valid data out delay after eoc rise
edge (tdata)
Current consumption
QV
• ”Tx” and “Rx” refer, respectively, to the transmit and receive sections of the SSI.
• For internal frame sync operation using external clock, the FS timing is the same as that of Tx data (for example, during AC97
mode of operation).
DD
shows the electrical specifications for the touchscreen ADC.
Parameter
Touchscreen ADC Electrical Specifications and Timing
1
ADC Electrical Specifications
2
NVCC_ADC
i.MX25 Applications Processor for Automotive Products, Rev. 9
S
)
Table 85. Touchscreen ADC Electrical Specifications
No pin/pad capacitance included
With a 250 pF load
With a 250 pF load
Power Supply Requirements
Timing Characteristics
Conditions
Analog Bias
—
—
—
—
—
—
—
—
—
—
—
ADC
Min.
0.5
—
—
—
—
—
2
2
2
5
12.5
Typ.
1.6
12
14
—
—
—
8
2
5
1
3
7
8
Freescale Semiconductor
Max.
1.75
125
2.1
0.5
10
13
—
—
8
3
6
cycles
cycles
MHz
Unit
kHz
bits
mA
mA
pF
k
clk
clk
ns
ns
ns
ns
ns
—